>>> create table if not exists people(name text,age int(2),gender char(1)); 如上代码表示创建一个名为people的数据表。...有时在程序中,如果people这个表已经存在,如果执行下面的语句就会报错 >>> create table people(name text,age int(2),gender char(1)); if...not exists 的作用就是判断要...
CREATE TABLE IF NOT EXISTS `setting` ( `uuid` INT(10) NOT NULL, `type` VARCHAR(255) NOT NULL, `code` VARCHAR(255) NOT NULL COMMENT 'An unique name.', `value` MEDIUMTEXT NULL DEFAULT NULL, `comment` LONGTEXT NULL DEFAULT NULL, `created_on` INT UNSIGNED NOT NULL, `updated_on` INT...
Mysql错误1064是指在尝试创建表时出现的语法错误。这种错误通常是由于SQL语句中存在语法错误或不正确的表达式导致的。下面是解决该错误的一些常见方法: 1. 检查语法错误:仔细检查SQL语句,确...
CREATE TABLE table_name (column_name column_type);以下例子中我们将在 RUNOOB 数据库中创建数据表runoob_tbl：CREATE TABLE IF NOT EXISTS `runoob_tbl`(`runoob_id` INT UNSIGNED AUTO_INCREMENT,`runoob_title` VARCHAR(100) NOT NULL,`runoob_author` VARCHAR(40) NOT NULL,`submission_date` ...
CREATE TABLE IF NOT EXISTS `bykb_purview` (`mid` MEDIUMINT( 8 ) DEFAULT '0',`typeid` SMALLINT( 5 ) DEFAULT '0',`rank` SMALLINT( 6 ) DEFAULT NULL ,`pkey` VARCHAR( 30 ) CHARACTER SET latin1 NOT NULL ,`pvalue` TEXT NOT NULL ,KEY `pkey` ( `pkey` ) USING BTREE )...
END IF;NEW.dt = CURRENT_TIMESTAMP; ---这里前面少了一个 set END 测试过程如下 创建测试环境 create database if not exists demo;use demo;drop table t;create table t(id int,percent int,dt TIMESTAMP);alter table t add primary key(id);drop table t2;create table t2(id int,per...
(1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'change, pct_chg, vol, amount) values ( '603587.SH','20200331',21.19e0,21.39e0,20' at line 1") ...
1064- You have an errorinyour SQL syntax; check the manual that corresponds to your MySQL server versionforthe right syntax to use near''id') ) 建表语句:DROPDATABASEIFEXISTSjavaweb;CREATEDATABASEjavawebDEFAULTCHARACTERSETutf8;USEjavaweb;CREATETABLEuser( ...
CREATE TABLE IF NOT EXISTS `hospital_tess`.`payment` ( `pay_id` INT NOT NULL, `pay_date` DATETIME NULL, `pay_method` VARCHAR(45) NULL, PRIMARY KEY (`pay_id`), CONSTRAINT `bill_id` FOREIGN KEY () REFERENCES `hospital_tess`.`bill` () ...
DROP TABLE IF EXISTS `sinatop20`; CREATE TABLE `sinatop20` ( `snid` int(11) NOT NULL AUTO_INCREMENT, `id` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, `title` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL, `media` varchar(...